Xml db and sys_dburigen, links and maintain DOM

Question

I have a few questions about XML DB:
1. xmltype table and sys_dburigen:
Can we use sys_dburigen to create a DBUriTYpe instance for an xmltype table like purchaseorder in the basic demo?
For example, as in ,
select sys_dburigen(empno,ename) from emp where empno=7369;
I tried several variations of:
select sys_dburigen(Reference,PurchaseOrder/Reference) from purchaseorder x
where existsnode(value(x),'/PurchaseOrder[Reference="BLAKE-2002100912333601PDT"]')=1;
and got an error:
ORA-19332: invalid column in the create_dburi operator pointint to PurchaseOrder/Reference.
2. How do you link to an xml document in xml db from a html file (external file) or xml file (in xmld db)? We need to have the same type of functionality as the html's
linkname
to link to a Lineitem in a purchaseorder, for example.
3. Is DOM fidelity always maintained in xml db (ordering, for example when extracting elements)? or do we need to specify maintainDOM = true?
Any help is really appreciated. Thanks.
Carmen.

Answer 1

Mark,
Thanks again for the information. How about sys_dburigen? Can we use it with an xmltype table? How?
Is there a way to provide links to an XML document in XML DB like the hmtl <a href="...>?
Thanks.
Carmen.